Upstream task https://bugs.chromium.org/p/gerrit/issues/detail?id=11650
I'm seeing lots of "Skipping change xxx because the corresponding repository was not found" at https://gerrit.wikimedia.org/r/monitoring
For example:
com.google.gerrit.server.permissions.PermissionBackendException: project 'maps/tilerator' is unavailable at com.google.gerrit.server.permissions.FailedPermissionBackend$FailedChange.test(FailedPermissionBackend.java:170) at com.google.gerrit.server.permissions.PermissionBackend$ForChange.test(PermissionBackend.java:383) at com.google.gerrit.server.query.change.ChangeIsVisibleToPredicate.match(ChangeIsVisibleToPredicate.java:70) at com.google.gerrit.server.query.change.ChangeIsVisibleToPredicate.match(ChangeIsVisibleToPredicate.java:32) at com.google.gerrit.index.query.AndSource.match(AndSource.java:147) at com.google.gerrit.index.query.AndSource.readImpl(AndSource.java:101) at com.google.gerrit.index.query.AndSource.read(AndSource.java:83) at com.google.gerrit.index.query.QueryProcessor.query(QueryProcessor.java:238) at com.google.gerrit.index.query.QueryProcessor.query(QueryProcessor.java:174) at com.google.gerrit.index.query.QueryProcessor.query(QueryProcessor.java:157) at com.google.gerrit.server.query.change.OutputStreamQuery.query(OutputStreamQuery.java:201) at com.google.gerrit.sshd.commands.Query.run(Query.java:103) at com.google.gerrit.sshd.SshCommand$1.run(SshCommand.java:36) at com.google.gerrit.sshd.BaseCommand$TaskThunk.run(BaseCommand.java:459) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) at com.google.gerrit.server.git.WorkQueue$Task.run(WorkQueue.java:558) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: org.eclipse.jgit.errors.RepositoryNotFoundException: repository not found: /srv/gerrit/git/maps/tilerator at com.google.gerrit.server.git.LocalDiskRepositoryManager.openRepository(LocalDiskRepositoryManager.java:157) at com.google.gerrit.server.git.LocalDiskRepositoryManager.openRepository(LocalDiskRepositoryManager.java:139) at com.google.gerrit.server.project.ProjectCacheImpl$Loader.load(ProjectCacheImpl.java:310) at com.google.gerrit.server.project.ProjectCacheImpl$Loader.load(ProjectCacheImpl.java:294) at com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3524) at com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2273) at com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2156) at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2046) at com.google.common.cache.LocalCache.get(LocalCache.java:3943) at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3967) at com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4952) at com.google.gerrit.server.project.ProjectCacheImpl.strictCheckedGet(ProjectCacheImpl.java:161) at com.google.gerrit.server.project.ProjectCacheImpl.checkedGet(ProjectCacheImpl.java:157) at com.google.gerrit.server.project.DefaultPermissionBackend$WithUserImpl.project(DefaultPermissionBackend.java:73) at com.google.gerrit.server.permissions.PermissionBackend$WithUser.ref(PermissionBackend.java:145) at com.google.gerrit.server.permissions.PermissionBackend$WithUser.indexedChange(PermissionBackend.java:168) at com.google.gerrit.server.query.change.ChangeIsVisibleToPredicate.match(ChangeIsVisibleToPredicate.java:68) ... 19 more
and many more.
This is likley because of the index (which means the delete-project plugin didn't reindex after?)